I don't know what the deal is, I'm getting the best visual quality and stable performance to date using the 12.1 drivers with 11.12 Cap 3. I mean, things are buttery smooth, I couldn't be happier. I always, however, use the Erocker method to install new drivers.
“growing up, i always wanted to be a vet. til i learned there was more to being a vet than just putting down cats all day.” -digibucc